摘要
利用归一化差分、Theta map断裂识别方法厘定出大兴安岭断裂带及黑河—齐齐哈尔—白城断裂的位置,验证了黑河—齐齐哈尔—白城断裂的存在;结合前人研究成果及相关地质地球物理资料分析认为黑河—齐齐哈尔—白城断裂是额尔古纳—兴安地块与松嫩地块的大地构造分界线,而大兴安岭断裂带是由额尔古纳—兴安地块上的构造薄弱位置因受挤压作用造成地壳构造变动形成的巨型深断裂带;利用Oasis Montaj重磁反演软件进行人机交互反演验证,给出了研究区合理的地质构造模型。
According to the Normalized Differential and the Theta map fracture identification techniques,this article fixes the locations of the Da Hinggan mountains fracture zone and the Heihe-Qiqihar-Baicheng fracture. It verifies the existence of the Heihe-Qiqihar-Baicheng fracture. According to previous research results as well as related geological and geophysical data,we argue that the Heihe--Qiqihar--Baicheng fracture is the tectonic boundary of Erguna--Xing＇an plot and Songnen massif. While the Da Hinggan mountains fracture zone is a giant deep fault which is attributed to crustal tectonic movements squeezed by weak structures of the Erguna-Xing＇an plot. Utilizing Oasis Montaj gravity and magnetic inversion software for human-computer interaction,we conclude a reasonable geological structure model suitable for the research area.
出处
《世界地质》
CAS
2015年第1期187-193,共7页
World Geology
基金
2013年博士点基金项目(20130061110060)
国家863项目子课题(2012AA052801)
国家重点基础研究发展计划973项目(2013CB429805)联合资助
